Pop-up of the full bibliography if mouse cursor hovers over a reference

Edit: The title should say "... full bibliography entry if ..."

Hello everyone,

I am writing my thesis, and I want to include some fancy formatting for my biblatex references with a pop-up of the full bibliography entry when the mouse cursor hovers over link that refers to it (via \citeauthor, \parencite, and others).

I found this interesting 2011 post on TeX Stackexchange where the fancytooltips package is being used, but none of the three popular solutions worked for me with pdfLaTeX in Overleaf. I kept adding the required .sty and .def files, but at some point the compilation simply failed because some image file was missing. The error message and code don't clarify what image file exactly I need to add.

Using pdfcomment is not what I am looking for because I don't want editable comments in the document; cooltooltips seemed like fancytooltips but less advanced.

Does anyone know other solutions and/or have an MWE that I could adopt and expand?